JP6629057B2 - Heat insulation material for foundation and heat insulation underfloor structure using it - Google Patents

Description

  The present invention relates to a heat insulating material for a foundation, which is attached to a position covering a termite-controlling material disposed at a lower end portion of an inner surface of a foundation for supporting a building, and a heat insulating underfloor structure using the heat insulating material.

  For example, Patent Literature 1 below is known as a conventional technique related to the above-described heat-insulating underfloor structure. As shown in FIG. 23, the insulated underfloor structure of Patent Literature 1 has an inverted T-shaped foundation 101 (so-called cloth foundation) for supporting a building and a ground covering the ground E surrounded by the foundation 101. It includes concrete 105, and heat insulating materials 107 and 108 attached to the inner side surface (the right side surface in FIG. 23) of the foundation 101 and the upper surface of the slab concrete 105, respectively.

  In Patent Document 1, a termite-proof material 110 for repelling termites is disposed at a corner (inner corner) where the inner side surface of the foundation 101 and the upper surface of the interstitial concrete 105 intersect. That is, a notch is provided in the lower surface of the side end portion of the heat insulating material 108 corresponding to the inner corner, and the termite control material 110 is filled in a space formed corresponding to the notch.

JP 2005-213837 A

  According to the insulated underfloor structure disclosed in Patent Document 1 (FIG. 23), it is assumed that the interstitial concrete 105 shrinks with the elapse of time and a gap is generated at the joint between the foundation 101 and the interstitial concrete 105. Also, by the action of the termite-controlling material 110 disposed at the inner corner portion above the termites, termites living in the soil are prevented from climbing upward through the gap through the base 101, and the woody portion of the building (base) And termites) and heat insulating materials are prevented from being damaged by termites.

  However, the conventional structure shown in FIG. 23 has a problem that the maintainability of the termite control material 110 is deteriorated. For example, after a long period of use, the state of the termite-controlling material 110 may be checked, or if necessary, the termite-controlling material 110 may be replenished or replaced. To do so, it is necessary to temporarily remove the heat insulating materials 107 and 108, which complicates the operation.

  The present invention has been made in view of the above circumstances, and a base capable of improving the maintainability of the termite-controlling material while preventing termites from invading above the base with the termite-controlling material. It is an object to provide a heat insulating material for use and a heat insulating underfloor structure using the same.

As a means for solving the above-mentioned problems, a heat insulating material for a foundation according to one aspect of the present invention is a heat insulating material for a foundation attached at a position covering a termite-controlling material arranged at a lower end portion of an inner surface of a foundation supporting a building. A heat insulating material, a lower member provided at a position separated from an inner surface of the foundation so as to form a filling space for filling the termite-controlling material, and the lower member so as to close the filling space An upper member that is removably provided at an upper portion of the lower member and that opens an upper surface of the filling space by removing the upper member from the upper portion of the lower member, wherein a lower surface of the upper member and an upper surface of the lower member are formed on the base. inclined in such as a side height increases near the inner surface and is characterized in Rukoto (claim 1).

  According to the present invention, since the lower member is formed at a position separated from the inner surface of the foundation, a filling space capable of filling a termite-proof material is formed between the lower member and the inner surface of the foundation, Even if termites penetrate into the lower end of the inner surface of the foundation through gaps caused by structural reasons or deterioration of concrete over time, the termite-proofing material prevents the termites from climbing upward along the inner surface of the foundation. Thus, the termites can be effectively prevented from being damaged by termites.

  In addition, since almost the entire upper surface of the filling space is opened as the upper member is removed from the lower member, the termite-controlling material filled in the filling space can be removed externally (in the lower member) with the upper member removed. (Upper side). Since the state of the termite-controlling material can be visually checked simply by removing the upper member from the lower member in this manner, the work of inspecting the termite-controlling material becomes very easy. Further, as a result of the inspection, if necessary, the termite-controlling material can be replenished or replaced from the upper side of the filling space, so that the termite-controlling material can maintain good termite-controlling performance. In addition, since the heat insulating material for the foundation is composed of only two members (the upper member and the lower member) having a simple shape, the manufacturing cost can be reduced.

Further, the upper surface of the lower surface and the lower member of the upper member is, are inclined such that the height as the side close to the inner surface of the foundation is increased, slightly lower than the horizontal direction along the upper member to the inclination The upper member can be slid down even if, for example, a heat insulating material is provided immediately above (the inner side of the foundation of) the upper member and the upper member cannot be removed upward. Will be able to In addition, according to the above configuration, when the upper member is mounted after the termite-controlling material replenishment or replacement work is completed, the upper member can be mounted from the obliquely lower side of the lower member. It is also possible to attach the upper member to the upper surface of the lower member while avoiding contact with the material.

In the above configuration, preferably, the upper member has a convex portion having a part of the lower surface protruding downward or a concave portion dug upward, and the lower member fits the convex portion on the upper surface thereof. mounting recesses for or has an attachment member for fitting in the recess (claim 2).

  If the position of the lower surface of the upper member and the upper surface of the lower member are displaced in the longitudinal direction in a state where the upper member is attached to the upper surface of the lower member (hereinafter also referred to as “attached state of the upper member”), the displacement is caused by the displacement There is a possibility that cold air may enter through the gap, and the heat insulating performance of the heat insulating material for foundation may be reduced. However, according to the above configuration, the convex portion (or concave portion) of the upper member is replaced with the mounting concave portion (or mounting convex portion) of the lower member. ), The upper surface of the lower member and the lower surface of the upper member can be aligned in the longitudinal direction, and the upper member can be attached so that the longitudinal displacement of the upper member and the lower member does not occur. it can. Moreover, when the upper member is mounted, the convex portion of the upper member is fitted into the mounting concave portion of the lower member, so that a horizontal (lateral) force is applied to only one of the upper member and the lower member. In addition, it is possible to prevent the upper member and the lower member from shifting in the longitudinal direction. Thus, for example, even when an earthquake occurs, the upper member and the lower member do not shift as a single body, so that the heat insulating performance can be maintained for a long time.

In the above configuration, preferably, the upper member has an upper portion and a lower portion located below the upper portion and in contact with the lower member, and the surface of the lower portion has the upper portion and The lower member has a curved surface that is curved so as to smoothly connect the surfaces of the lower member ( claim 3 ).

  According to this configuration, the thickness of the upper part of the upper member and the thickness of the lower member can be set to be the same, and the thickness of the part (lower part) between the upper part and the lower member is reduced by the upper part and the lower member. Can be maintained at a value equal to or greater than the thickness of the substrate. Thus, unlike the case where, for example, a flat outer shape in which the surfaces of the respective parts are all located on the same plane is employed, a situation in which the thickness of the base insulating material is partially insufficient or unnecessarily large. It is possible to avoid the problem, to ensure the heat insulation performance of the heat insulating material for foundations without bias, and to suppress excessive use of the heat insulating material.

In the above configuration, preferably, the the back surface of the lower member which faces the foundation, extending from the back surface to the inner surface of said base, tip said that (claims abutting portion abuts is provided on the inner surface of the foundation 4 ).

  According to this configuration, by disposing the lower member at a position where the tip of the abutting portion of the lower member abuts on the inner surface of the foundation, the lower member is maintained at a constant distance from the inner surface of the foundation to the back surface of the lower member. Since the members can be arranged, the filling space for filling the termite-controlling material can be made appropriate. In other words, a gap (filling space) is formed between the inner surface of the foundation and the back surface of the lower member by the length of the abutting portion, so that the filling space does not become too narrow or too wide. The lower member can be arranged with a great sense of distance.

In the above configuration, preferably, the abutting portion includes a top portion forming a ridge extending in the longitudinal direction at its upper end, and a pair of inclined surfaces extending being inclined from the top to both sides in the width direction (claim 5 ).
According to this configuration, when the termite-controlling material is filled into the filling space, the termite-controlling material is guided to the lower filling space through the inclined surface of the contacting portion without riding on the upper surface of the contacting portion, It is possible to reduce waste of termites.

A heat insulating material for a foundation according to another aspect of the present invention is a heat insulating material for a foundation attached to a position covering a termite-controlling material arranged at a lower end portion of an inner side surface of a foundation for supporting a building, and A lower member provided at a position separated from the inner surface of the foundation so that a filling space for filling the termite material is formed therebetween, and an upper portion of the lower member so that the filling space can be closed. An upper member that is provided so as to be insertable and removable and that opens the upper surface of the filling space by removing the upper surface of the lower space from the upper portion of the lower member. Abutting portion is provided, the leading end of which abuts against the inner side surface of the foundation, and the abutting portion has a top portion forming a ridge line extending in a longitudinal direction at an upper end thereof, and is inclined to both sides in the width direction from the top portion. With a pair of inclined surfaces extending And it is characterized in bets (claim 6).

Insulation underfloor structure according to still another aspect of the present invention, wherein the heat insulating material for the foundation, a heat insulating material attached so as to cover an inner surface of the foundation located above the heat insulating material for the foundation, further comprising the use insulation material and said anti-termite material to be filled into the filling space between said base and said (claim 7).

  According to the present invention, a heat-insulated underfloor structure that is resistant to termite damage and excellent in heat insulation performance can be realized.

  As described above, according to the present invention, the termite-controlling material can be improved in maintainability while termites prevent the termites from entering above the foundation.

It is a partially notched perspective view which shows the heat insulation underfloor structure concerning one Embodiment of this invention. It is sectional drawing of the said heat insulation underfloor structure. It is a top view of the said heat insulation underfloor structure. It is a perspective view which extracts and shows the heat insulating material for foundations and the corner heat insulating material from the heat insulating underfloor structure of FIG. It is a perspective view which shows the detailed structure of the said heat insulating material for foundations, (a) has shown the form seen from the front side, and (b) has shown the form seen from the back side, respectively. It is sectional drawing of the said heat insulating material for foundations. It is a perspective view which shows the lower member of the said heat insulating material for foundations alone, (a) has shown the form seen from the front side, and (b) has shown the form seen from the back side, respectively. It is a top view which shows the lower member of the said heat insulating material for foundations alone, (a) is a top view, (b) is a rear view, (c) is a front view. It is a perspective view which shows the upper member of the said heat insulating material for foundations by itself. FIG. 3 is an enlarged cross-sectional view showing a part of FIG. 2, wherein (a) illustrates a state in which an upper member is attached to a lower member, and (b) illustrates a state in which the upper member is removed from the lower member. It is a perspective view which shows the detailed structure of the said corner heat insulation material, (a) has shown the form seen from the surface side, (b) has shown the form seen from the side, respectively. It is a top view of the said corner heat insulating material. It is a perspective view which shows the lower member of the said heat insulating material for foundations alone, (a) has shown the form seen from the surface side, (b) has shown the form seen from the side, respectively. It is a figure (the 1) for explaining the procedure of constructing the above-mentioned insulated underfloor structure. It is FIG. (2) for demonstrating the procedure of constructing the said heat insulation underfloor structure. It is FIG. (3) for demonstrating the procedure of constructing the said heat insulation underfloor structure. It is FIG. (4) for demonstrating the procedure of constructing the said heat insulation underfloor structure. It is sectional drawing which shows the heat insulation underfloor structure in case a drain hole is provided in a foundation. It is FIG. 1 equivalent view for describing the modification of the said embodiment. It is FIG. 5B equivalent drawing for demonstrating another modification of the said embodiment. It is FIG. 1 equivalent view for demonstrating another modification of the said embodiment. It is FIG. 5B and FIG. 8B equivalent figure for demonstrating another modification of the said embodiment. It is a figure for demonstrating the conventional example of a heat insulation underfloor structure.

(1) Overall Configuration of Insulated Underfloor Structure FIGS. 1 to 3 are a partially cutaway perspective view and a sectional view showing an insulated underfloor structure according to an embodiment of the present invention. As shown in these drawings, the heat-insulating underfloor structure of the present embodiment includes a foundation 1, a heat insulating material 8, a heat insulating material 10 for a base, a corner heat insulating material 30, and a termite control material 40.

  The foundation 1 is a concrete structural material that supports the building from below. Specifically, the foundation 1 in the present embodiment is a so-called solid foundation, and as shown in FIG. 2, a slab 3 that covers the ground (construction surface) of the underfloor portion of the building and a slab 3 that rises upward from the slab 3. And a rising portion 2 formed at the bottom. On the upper surface of the rising portion 2, a base T (FIG. 2) made of a wooden timber or the like constituting a frame of the floor of the building is fixed via an anchor bolt or the like (not shown).

  The rising portion 2 is framed in an appropriate pattern according to the planar shape of the floor of the building, the arrangement of the rooms, and the like. As shown in FIG. 3, the rising portion 2 in the present embodiment includes a plurality of outer frames 2 </ b> A to 2 </ b> D formed along the outer periphery of the floor and a region surrounded by the outer frames 2 </ b> A to 2 </ b> D. And inner frame portions 2E to 2H for partitioning into a plurality of sections.

  In the rising portion 2, a region defined by two outer frame portions 2A and 2B intersecting each other and two inner frame portions 2E and 2F connected to the outer frame portions 2A and 2D is a bathroom partition corresponding to a bathroom. X. In the present embodiment, the above-described heat insulating materials 8, 10, 30 are attached so as to cover at least the inner surface of the bathroom section X. This is to insulate the underfloor of the bathroom from cooling the floor of the bathroom, especially in winter. Of course, it is preferable to insulate the rooms other than the bathroom. For example, the heat insulating material 8 and the like may be attached to the sections corresponding to all the rooms.

  In the following description, the inner surface of each section to which the heat insulating material 8 or the like may be attached, that is, the side surface on the underfloor side of the outer frame portions 2A to 2D and the side surface of the inner frame portions 2E to 2H in the rising portion 2. Are collectively referred to as “the inner surface S of the foundation 1”.

  The heat insulating material 8 is a heat insulating member made of a foamed resin such as urethane foam or polystyrene foam or glass wool. In the present embodiment, as shown in FIGS. 1 and 2, the heat insulating material 8 is attached so as to cover a region of the inner surface S of the foundation 1 except for a lower end thereof.

  The base heat insulating material 10 is a heat insulating member made of a foamed resin such as expanded polystyrene formed by bead foam molding, for example. The foundation heat insulating material 10 is attached so as to cover a lower end portion of the inner surface S of the foundation 1 that is not covered by the heat insulating material 8.

  The corner heat insulating material 30 is a heat insulating member made of the same material as the base heat insulating material 10. The corner heat insulating material 30 is formed at a corner portion of the foundation 1, that is, a corner portion where the frame portion of the rising portion 2 intersects (for example, a corner portion where the outer frame portions 2A and 2B intersect in the example of FIG. 1). It is attached so as to cover the lower end of the.

  The termite-controlling material 40 has a property of repelling termites (termite-controlling performance). As the termite-controlling material 40, various materials having termite-controlling performance can be used. In the present embodiment, a granular or paste-like termite-controlling material is used.

  As the termite-controlling material, for example, an angled glass flake or a material obtained by attaching a termite-controlling agent to the surface of inorganic particles (crushed zeolite, pumice or other minerals, or sand) is preferably used. can do. As the paste termite-controlling material, a viscous substance containing a termite-controlling agent and an emulsion (a polymer particle or the like dispersed in water or an organic solvent) can be suitably used.

  When the termiticide 40 contains a termite-controlling agent, examples of the termite-controlling agent include pyrethroid-like agents (silafluofen, etofenprox, etc.) and pyrethroid-based agents (bifenthrin, cypermestone, deltamethrin, permethrin, permethrin, allethrin). , Tralomethrin, etc.), carbamates (proboxur, fenobucarb, sevin, etc.), chlornicotyls (imidacloprid, acetapride, clothianisin, etc.), nitroganillins (dinotefuran, etc.), organophosphorus insecticides (foxime, tetraclocupinphos, Fenitrothion, probetanfos, etc.), pyrazoles (fibronyl, etc.), chlorophenols (4-bromo-2,5-dichlorophenol (BDCP), etc.), phenylpyrroles (chloro Fenabiru etc.), Hiba oil, turmeric, capric acid, coconut oil, may be selected and used as appropriate from among palm oil.

(2) Detailed structure of heat insulating material for foundation FIG. 4 shows the heat insulating material for foundation 10 and corner heat insulating material 30 extracted from the heat-insulating underfloor structure shown in FIG. 1 and in the same pattern as that of FIG. This shows the arrangement state. As shown in FIG. 4 and FIG. 1 and FIG. 2 described above, the heat insulating material 10 for the foundation is formed so that a filling space for filling the termite-controlling material 40 is formed between the heat insulating material 10 and the foundation 1. A lower member 12 is provided at a position away from the side surface S, and an upper member 11 is provided at an upper portion of the lower member 12 so as to be able to be inserted and removed so that the filling space can be closed. By removing the upper member 11 from the upper part of the lower member 12, almost the entire upper surface of the filling space can be opened. The corner heat insulating material 30 has a shape that fills a space generated when the two base heat insulating materials 10 are abutted at right angles, and, like the base heat insulating material 10, is formed of members that are vertically divided. Hereinafter, members corresponding to the upper member 11 and the lower member 12 in the corner heat insulating material 30 are referred to as a corner upper member 31 and a corner lower member 32, respectively (FIG. 4). Like the lower member 12, the lower corner member 32 is provided at a position separated from the inner surface S of the foundation 1 so as to form a filling space. Like the upper member 11, the upper corner member 31 is removably provided above the lower corner member 32 so that the filling space between the inner surface S of the foundation 1 and the lower corner member 32 can be closed. The details of the corner heat insulating material 30 will be described later.

  FIGS. 5A, 5B, and 6 are a perspective view and a cross-sectional view showing the base insulating material 10 in a state where the upper member 11 is attached. FIGS. 7A and 7B are perspective views each showing the lower member 12 alone, and FIGS. 8A, 8B, and 8C are a top view, a rear view, and a front view of the lower member 12, respectively. 9 (a) and 9 (b) are perspective views each showing the upper member 11 alone, and FIGS. 10 (a) and 10 (b) are partially enlarged sectional views of FIG. However, FIG. 10B shows a state in which the upper member 11 has been removed.

  In the following, of the surfaces of the upper member 11, the surface on the under floor side (the side opposite to the inner surface S of the foundation 1) is the surface 11a, and the opposite side to the surface 11a (the side facing the inner surface S of the foundation 1). Is a back surface 11b, an upper surface is an upper surface 11c, and a lower surface is a lower surface 11d. Similarly, among the respective surfaces of the lower member 12, the surface below the floor is the surface 12a, the surface opposite to the surface 12a is the rear surface 12b, the upper surface is the upper surface 12c, and the lower surface is the lower surface 12d.

  As shown particularly in FIG. 6, the upper surface 12c of the lower member 12 is inclined such that the closer to the inner surface S of the foundation 1, the higher the height. Similarly, the lower surface 11d of the upper member 11 is inclined at the same angle as the upper surface 12c of the lower member 12, and is placed on the upper surface 12c of the lower member 12 when the upper member 11 is mounted. As shown in FIGS. 5 and 6, when the upper member 11 is attached, the lower surface 11 d of the upper member 11 contacts the upper surface 12 c of the lower member 12, and the surface 11 a of the upper member 11 becomes the surface 12 a of the lower member 12. And almost continuously.

  The back surface 11b of the upper member 11 is a flat surface extending parallel to the inner surface S of the foundation 1. On the other hand, the back surface 12b of the lower member 12 is a stepped surface having a step p at an intermediate portion in the vertical direction. Specifically, the rear surface 12b is formed such that a part of the upper side is slightly recessed toward the front surface 12a, and a step p is formed at a position corresponding to a lower edge of the recessed portion. The rear surface 12b is formed at a position farther from the inner surface S than the rear surface 11b of the upper member 11 as a whole.

  As shown in FIGS. 6 and 10, a space V is formed between the back surface 12 b of the lower member 12 and the inner surface S of the base 1 in a state where the base insulating material 10 is attached to the base 1. This space V is used as a space for filling the termite-controlling material 40 described above. Therefore, the space is hereinafter referred to as a “filled space V”. The filling space V is a space surrounded by the inner side surface S of the foundation 1, the upper surface of the slab 3, the back surface 12b of the lower member 12, and the lower surface 11d of the upper member 11.

  In order to avoid the problem that the heat insulation performance is locally reduced due to the provision of the filling space V, the thickness of the heat insulating material 8 and the heat insulating material 10 for the foundation that the cool air should pass from the slab 3 to reach the underfloor space is set. Each part has a substantially constant length (W1 = W2 = W3 in FIG. 6). In other words, it is necessary for the cool air to pass through the base heat insulating material 10 (heat insulating material 8) having a thickness corresponding to the length W1 at least before reaching the underfloor space. Hereinafter, the thickness of each part will be described in detail.

  The upper surface 11a of the upper member 11 is divided into upper and lower portions with an inflection point Q in cross section in FIG. 6 interposed therebetween, and the upper member 11 located above the inflection point Q is defined as an upper portion 11X, Assuming that a portion located below 11X is a lower portion 11Y, the surface 11x of the upper portion 11X is a flat surface extending in parallel with the inner surface S of the foundation 1 like the back surface 11b of the upper member 11. I have. For this reason, the thickness (distance from the front surface 11x to the back surface 11b) of the upper portion 11X of the upper member 11 is uniform, and the value is shown as W1 in FIG.

  On the other hand, the surface 11y of the lower portion 11Y is a curved surface that is curved so as to smoothly connect from the inflection point Q to the surface 12a of the lower member 12. As shown in FIG. 6, this curved surface is centered on the upper end R of the back surface 12 b of the lower member 12, and has an arc whose radius is the length from the center to the inflection point Q from the inflection point Q to the lower member 12. It is a curved surface obtained when the upper end of the surface 12a is connected, that is, a curved surface bulging downward from the floor toward the bottom as viewed from the side. Accordingly, the distance from the upper end R of the back surface 12b of the lower member 12 to the front surface 11y of the lower portion 11Y is uniform, and the value is shown as W2 in FIG.

  The surface 12a of the lower member 12 is flat at the position protruding below the floor compared to the surface 11x of the upper portion 11X (position distant from the inner surface S of the foundation 1) and extending parallel to the inner surface S of the foundation 1. Surface. On the other hand, as described above, the upper surface of the lower member 12 is slightly recessed at the upper portion of the lower member 12 than at the lower portion because the upper surface is partially recessed. Become smaller. Among them, the smaller thickness (the thickness of the upper portion having the concave portion) is defined as the thickness W3 of the lower member 12. In this embodiment, as described above, the thickness W1 of the upper portion 11X, the radius W2 of the circle including the curved surface formed by the surface 11y of the lower portion 11Y, and the thickness W3 of the lower member 12 are all equal. They are set to the same value (W1 = W2 = W3).

  As shown in FIG. 9, two convex portions 18, each of which protrudes downward (toward the lower member 12), are provided on the lower surface 11 d of the upper member 11 so as to be spaced apart in the longitudinal direction of the upper member 11. I have. These protrusions 18 are trapezoidal quadrangular prisms each having a trapezoidal shape when viewed from above, and are tapered from the surface 11y of the lower portion of the upper member 11 toward the inner surface S of the foundation 1.

  On the other hand, on the upper surface 12c of the lower member 12, as shown in FIGS. 7 and 8, two mounting concave portions 17 for fitting the convex portions 18 are provided. The two mounting recesses 17 are also provided apart from each other in the longitudinal direction of the lower member 12 similarly to the above-mentioned projections 18. Each of the mounting recesses 17 has a shape corresponding to the outer shape of the projection 18, that is, a trapezoidal concave shape in a top view, and is directed from the surface 12 a of the lower member 12 toward the inner surface S of the foundation 1. It is formed in a tapered shape. By fitting the convex portion 18 of the upper member 11 into the mounting concave portion 17, not only the alignment between the lower surface 11d of the upper member 11 and the upper surface 12c of the lower member 12 is facilitated, but also the mounting state of the upper member 11 is stable. Can be enhanced.

  Further, as shown in FIG. 9A, a position on the surface side of the upper member 11 immediately above the two protrusions 18 provided on the lower surface 11d of the upper member 11 (that is, the surface 11y of the lower portion 11Y of the upper member 11). ) Are each formed with a projection 20. The protrusion 20 is formed so as to protrude upward from one region of the surface 11y of the lower portion 11Y of the upper member 11. The projection 20 can be used as a handle when the upper member 11 is detached from the lower member 12 as shown in FIG.

  As shown in FIG. 7, the rear surface 12b of the lower member 12 is provided with two abutting portions 15 extending from the rear surface 12b to the inner surface S of the foundation 1. Similar to the projections 18 and the projections 20, the abutting portions 15 are provided at substantially the same positions apart from the locations of the projections 18 and the projections 20 in the longitudinal direction. The outer shape of the abutting portion 15 is a pentagonal prism extending in the longitudinal direction between the lower member 12 and the inner side surface S of the foundation 1, and the length of the abutting portion 15 in the longitudinal direction (strictly speaking, the abutting portion 15). The length of the filling space V is the length obtained by subtracting the step p from the length in the longitudinal direction of No. 15. Therefore, the sum of the length in the longitudinal direction of the abutting portion 15 and the thickness of the upper surface 12c of the lower member 12 (the distance from the front surface 12a to the rear surface 12b) is the thickness of the lower surface 11d of the upper member 11 (from the front surface 11a to the rear surface). 11b).

  As shown in FIG. 8, the abutting portion 15 has a top portion 15a forming a ridge line extending in the longitudinal direction at an upper end thereof, and a pair of inclined surfaces 15b extending from the top portion 15a to both sides in the width direction. are doing. In other words, two of the side surfaces of the pentagonal prism constituting the abutting portion 15 located on the upper side are the inclined surfaces 15b, and the ridge lines of these inclined surfaces 15b are the top portions 15a.

  The top portion 15a is inclined at the same angle as the upper surface 12c of the lower member 12 so that the height increases as it goes to the inner surface S side of the foundation 1. That is, the top 15a of the abutting portion 15 is in contact with the lower surface 11d of the upper member 11 when the upper member 11 is attached. The tip 15c of the abutting portion 15 (that is, the surface that comes into contact with the inner surface S of the foundation 1) is a flat surface extending parallel to the inner surface S of the foundation 1, and when the upper member 11 is mounted, the upper member 11 is in contact with the inner surface S of the foundation 1 continuously flush with the back surface 11b (FIG. 10A). The inclined surface 15b is inclined downward at the same angle with respect to the top 15a.

(3) Detailed Structure of Corner Insulating Material FIGS. 11A and 11B are perspective views of the corner insulating material 30 in a state where the upper corner member 31 is attached to the lower corner member 32 as viewed from two different directions. FIG. 12 is a top view of the corner heat insulating material 30. FIGS. 13A and 13B are perspective views of the lower corner member 32 viewed from two different directions. In the following description of the corner heat insulating material 30, the surface of each part is also described as a front surface, a back surface, etc., and the terms representing these surfaces have the same meanings as those used in the description of the basic heat insulating material 10. For example, as shown in FIG. 11A, two surfaces orthogonal to each other under the floor of the lower corner member 32 (the side opposite to the inner surface S of the foundation 1) are used as shown in FIG. 32a.

  As shown in FIGS. 11 and 12, the corner insulating material 30 has no difference in configuration from the base insulating material 10 except that it is bent at 90 ° in the center. As a feature that is not present in the base insulating material 10, only the upper corner member 31 is divided into left and right parts so that the upper corner member 31 can be easily removed from the lower corner member 32.

  As shown in FIG. 11A, the upper corner member 31 is bent at 90 ° at the center and has a symmetrical shape with the bent portion as an axis. It does not include the surface, but is a plane including the surface formed by the right surface 32Ra of the lower corner member 32. In other words, as shown in the top view of FIG. 12, the division surface 31 </ b> D of the upper corner member 31 is continuous with the right surface 32 </ b> Ra of the lower corner member 32. Assuming that the left and right sides of the left and right divided upper corner members 31 are a left upper corner member 31L and a right upper corner member 31R, respectively, the right upper corner member 31R is, as shown in FIG. 11 and FIG. While the upper corner portion C (FIG. 12) is included, the left corner upper member 31L does not include the upper corner portion C of the corner heat insulating material 30.

  By dividing the upper corner member 31 into two parts as described above, for example, when it is desired to confirm the filling space V formed by the corner heat insulating material 30, the left corner upper member 31L in FIG. By removing the upper corner portion C first) and then removing the right corner upper member 31R (the one including the upper corner portion C of the corner heat insulating material 30), the heat insulation for the foundation adjacent to the corner heat insulating material 30 is removed. Only the upper corner member 31 can be removed from the lower corner member 32 without removing the upper member 11 of the member 10.

  In addition, the mounting of the upper corner member 31 can be performed in a state in which the upper member 11 is mounted on the adjacent base heat insulating material 10 by performing the procedure reverse to the above. The restriction that the upper member 11 of the adjacent base heat insulating material 10 must be attached beforehand is also eliminated, and the degree of freedom of construction can be increased. If the upper corner member 31 is cut in a symmetrical plane, the upper corner member is removed when the upper left corner member is to be removed and the other upper corner member cannot be removed. In addition, in the mounting operation of the upper corner member, if one of the left and right corner upper members is mounted, there is no space for mounting the other upper corner member.

  In addition, the upper corner member 31 has the same thing as the convex part 18 and the protrusion 20 in the said heat insulating material 10 for bases, respectively, and one each on the surface side symmetrically (FIG. 11).

  As shown in FIG. 13, the lower corner member 32 is bent at 90 ° in the center, and has a symmetrical shape with the bent portion as an axis, but is divided like the upper corner member 31. Absent. The lower corner member 32 has, on its front surface, one mounting recess 17 in the heat insulating material for foundation 10 symmetrically one by one. It has the same thing one by one symmetrically.

(4) Construction Procedure Next, a construction procedure for obtaining the insulated underfloor structure shown in FIGS. 1 to 3 by using the above-described base insulating material 10, corner heat insulating material 30, and heat insulating material 8 will be described.

  First, as shown in FIG. 14, the lower member 12 and the lower corner member 32 are arranged at the lower end of the inner surface S of the foundation 1. That is, the required number of lower members 12 are arranged along a corner (inner corner) where the inner surface S of the foundation 1 and the upper surface of the slab 3 intersect, and the two inner surfaces S and the upper surface of the slab 3 are arranged. The lower corner member 32 is disposed at the corner where the three surfaces intersect. The arrangement order is such that if the lower corner members 32 are arranged first, and then the lower members 12 adjacent to the lower corner members 32 are sequentially arranged, there is no gap between them.

  When arranging the lower member 12 and the corner lower member 32, the lower member 12 is arranged on the upper surface of the slab 3 while both of the two abutting portions 15 are in contact with the inner surface S of the foundation 1. I will do it. That is, the abutting portion 15 functions as a guide for determining the arrangement position of the lower member 12, and the upper surface of the slab 3 is brought into contact with the tip 15 c of each of the two abutting portions 15 while contacting the inner surface S of the foundation 1. The lower member 12 (lower corner member 32) is arranged at an appropriate distance from the inner surface S of the foundation 1, that is, a desired filling space V can be formed. 32 can be installed.

  Next, as shown in FIG. 15, the filling space V is filled with a termite-controlling material 40. That is, since almost the entire upper surface of the filling space V is open before the upper member 11 and the corner upper member 31 are placed, a required amount of termite material 40 is thrown in from the opened upper side, The termite control material 40 is filled so as to fill the filling space V. At this time, if the termite-controlling material 40 is filled at least to the same height as the step p of the back surface 12b of the lower member 12, sufficient termite-controlling performance can be exhibited. In other words, the worker filling the termite-controlling material 40 can use the step p as a mark for confirming that the filling amount of the termite-controlling material 40 has reached a required amount.

  Next, as shown in FIG. 16, the upper member 11 is placed on the upper surface of each lower member 12, and the upper corner member 31 is placed on the upper surface of the lower corner member 32. Since the upper member 11 is only placed on the lower member 12, there is no preferred order of arrangement unlike the lower member 12, and when the upper member 11 is placed on the lower member 12 in any order, A gap is not easily formed between members. In the arrangement of the upper member 11, the protrusion 18 of the upper member 11 is fitted into the mounting recess 17 of the lower member 12, and the upper member 11 is placed on the lower member 12 so that the upper member 11 and the lower member 12 can be spread and arranged without gaps in their longitudinal direction. That is, the above-mentioned convex portion 18 and mounting concave portion 17 play a role of ensuring the alignment between the upper member 11 and the lower member 12, respectively. When the upper member 11 (the upper corner member 31) is attached in this manner, the back surface 11b of the upper member 11 comes into contact with the inner surface S of the foundation 1.

  Finally, as shown in FIG. 17, the necessary number of heat insulating materials 8 are attached so as to cover the entire inner surface S of the foundation 1 at the portion located above the heat insulating material for foundation 10 and the corner heat insulating material 30. At this time, in order to fix the heat insulating material 8 to the inner surface S, for example, an adhesive is applied to the back surface of the heat insulating material 8. When an adhesive is used, it is preferable to use an adhesive containing a termite-controlling agent.

  By attaching the heat insulating material 8 to the inner surface S of the foundation 1 as described above, the heat insulating material for foundation 10 and the corner heat insulating material 30 are sandwiched and held between the heat insulating material 8 and the slab 3. Basically, it is not necessary to use fixing means such as an adhesive for the base insulating material 10 and the corner insulating material 30 held by such sandwiching. When the fixing means is not used, the foundation heat insulating material 10 and the corner heat insulating material 30 can be easily removed later. Of course, depending on the situation, at least one of the heat insulating materials 10 and 30 may be completely fixed using fixing means such as an adhesive. According to the above procedure, the insulated underfloor structure of the present embodiment is obtained.

  The timing for filling the termite-controlling material 40 is not limited to the above procedure. For example, after the upper member 11 and the heat insulating material 8 are installed on the lower member 12, the upper member 11 is removed from the lower member 12 to fill the space. The upper surface of V may be opened, and the termite-controlling material 40 may be filled from the open surface.

(5) Operation As described above, in the heat-insulating underfloor structure of the present embodiment, the termite control material 40 is disposed at the lower end of the inner side surface S of the base 1 and the base The heat insulating material 10 is attached. The base insulating material 10 includes a lower member 12 provided at a position separated from the inner side surface S of the base 1 and an upper member 11 provided at an upper portion of the lower member 12 so as to be insertable and removable. Between the back surface 12b of the lower member 12 and the inner side surface S of the foundation, a filling space V for filling the termite material 40 is formed, and by removing the upper member 11 from the upper part of the lower member 12, the filling space V is formed. Can be opened. According to such a configuration, maintenance of the termite-controlling material 40 is performed while maintaining the heat insulation performance under the floor and preventing the termites from entering the building through the inner surface S of the foundation 1. Performance can be improved.

  That is, in the above-described embodiment, the rear surface 12b of the lower member 12 is disposed at a position separated from the inner surface S of the foundation 1, so that the rear surface 12b of the lower member 12 and the inner surface S of the foundation 1 are prevented. Since the filling space V that can be filled with the dovetail material 40 is formed, the lower end portion of the inner surface S of the foundation 1 (the inner surface S and the upper surface of the slab 3 are connected to each other through a gap generated due to structural reasons or deterioration of concrete over time). Even if termites enter the intersecting inner corners), the termites 40 can prevent the termites from climbing upward along the inner surface S of the foundation 1 and the termites prevent the building from being damaged by the termites. It can be effectively prevented from spreading.

  For example, in the case of a solid foundation such as the foundation 1 shown in the above embodiment, in order to drain water collected on the upper surface of the slab 3 to the outside of the foundation 1, an appropriate position of the outer frame portion of the foundation 1 is shown in FIG. It is necessary to provide a drain hole 50 as shown. Since the drain hole 50 is provided so as to communicate the inner corner of the foundation 1 with the outer surface of the rising portion 2, termites living in the soil can enter the inner corner of the foundation 1 through the drain hole 50. Is assumed. In addition, when the slab 3 and the rising portion 2 are joined by so-called joining during the construction of the foundation 1, a gap may be generated in the joining surface due to the joining due to the temporal shrinkage of the concrete. Further, when the foundation 1 is installed, when a separator (a jig for keeping the distance between the opposing surfaces of the formwork constant) is installed inside the concrete formwork, the gap between the separator and the concrete is reduced. There may be a gap in the space. When such a gap occurs, there is a possibility that termites may also enter the inner corners of the foundation 1 through the gap.

  Even if termites enter the inner corners of the base 1 through the above-described path, the filling space V between the back surface 12b of the lower member 12 and the inner surface S of the base 1 is filled with the termite-controlling material 40. According to the structure of the embodiment, since termites are prevented from entering above the termite-controlling material 40, it is possible to effectively prevent the termites from damaging the building.

  Further, since the upper surface of the filling space V is almost completely opened as the upper member 11 is removed from the lower member 12, the termite-controlling material 40 filled in the filling space V with the upper member 11 removed is provided. Can be visually recognized from the outside (the upper side of the lower member 12). Since the state of the termite-controlling material 40 can be visually checked simply by removing the upper member 11 from the lower member 12 in this manner, the work of inspecting the termite-controlling material 40 becomes very easy. Further, as a result of the inspection, if necessary, the termite-controlling material 40 can be replenished or replaced from above the filling space V, whereby the termite-controlling material 40 can maintain good termite-controlling performance. In addition, since the heat insulating material for foundation 10 is composed of two members, that is, the upper member 11 and the lower member 12 having a simple shape, the manufacturing cost can be reduced.

  Here, it is also conceivable to use an integral heat insulating material instead of the heat insulating material for foundation 10 of the above-described embodiment having the lower member 12 and the upper member 11 which is detachable therefrom. However, in this case, it is difficult to fill the termite-controlling material 40 into the back side of the heat insulating material in an appropriate shape, particularly when the termite-controlling material 40 having fluidity as in the above embodiment is used. become. That is, when the heat insulating material for foundation 10 is replaced with an integrated heat insulating material, it is necessary to attach the integrated heat insulating material after disposing the termite control material 40 at the inner corner of the foundation 1. For this reason, after attaching the integral heat insulating material, it is not possible to confirm whether or not the termite-controlling material 40 is properly filled on the back side of the integral heat insulating material. In addition, when the integrated heat insulating material is removed to check the state of the termite-controlling material 40 during maintenance, there is a problem that the termite-controlling material 40 loses its shape.

  On the other hand, the base insulating material 10 of the above embodiment has the lower member 12 that forms the filling space V at the inner corner of the base 1 and the upper member 11 that can be inserted and removed above the lower member 12. When the upper member 11 is removed and the upper surface of the filling space is opened, the filling space V can be accessed through this open surface. For this reason, at the time of construction of the heat insulation underfloor structure, the termite-controlling material 40 is properly filled into the filling space V by inserting the termite-controlling material 40 from above the filling space V with the lower member 12 attached first. In addition, the shape of the termite-controlling material 40 after filling can be kept constant. Also, at the time of maintenance, the upper member 11 is similarly removed from the lower member 12 (while the lower member 12 is left at a fixed position), and the termite-controlling material 40 is visually inspected from above the filling space V and replenished. Since the replacement can be performed, there is no fear that the termite-controlling material 40 will lose its shape.

  In the above embodiment, the heat insulating material 8 is provided immediately above (the inner side surface S of the foundation 1) of the upper member 11 so that the upper member 11 cannot be moved upward, but the lower surface 11d of the upper member 11 and the lower member 11 12 and the upper member 12 is inclined so that the height is higher on the side closer to the inner side surface S of the foundation 1, so that the upper member 11 is slightly moved from the horizontal direction along the inclination of the upper surface 12 c of the lower member 12. The upper member 11 can be removed from the lower member 12 by sliding downward. When the upper member 11 is attached after the termite-controlling material 40 has been replenished or replaced, the upper member 11 can be attached from the diagonally lower side of the lower member 12 in the reverse procedure. It is also possible to attach the upper member 11 to the upper surface 12c of the lower member 12 without contacting the heat insulating material 8.

  If the position of the lower surface 11d of the upper member 11 and the upper surface 12c of the lower member 12 are displaced in the longitudinal direction in the state where the upper member 11 is mounted, cool air enters through a gap created by the displacement, and heat insulation for the foundation is performed. The heat insulation performance of the material 10 may be reduced. However, in the above embodiment, the upper member 11 has the convex portion 18 having a part of the lower surface 11d projecting downward, and the lower member 12 has the mounting concave portion for fitting the convex portion 18 to the upper surface 11c. 17, the protrusion 18 of the upper member 11 is fitted into the mounting recess 17 of the lower member 12, thereby aligning the upper surface 12 c of the lower member 12 with the lower surface 11 d of the upper member 11 in the longitudinal direction. The upper member 11 can be attached so that no gap is formed in the longitudinal direction between the upper member 11 and the lower member 12.

  In addition, when the upper member 11 is mounted, the protrusion 18 of the upper member 11 is fitted into the mounting recess 17 of the lower member 12, so that only one of the upper member 11 and the lower member 12 is horizontally (laterally). Even when the force (2) is applied, it is possible to prevent a gap from being formed in the longitudinal direction of the upper member 11 and the lower member 12. Accordingly, even when an earthquake occurs, for example, the upper member 11 and the lower member 12 are hardly displaced as a single body, so that the heat insulating performance can be maintained for a long period of time.

  Further, in the above embodiment, the upper member 11 has the upper portion 11X and the lower portion 11Y located below the upper portion 11X and in contact with the lower member 12, and the surface 11y of the lower portion 11Y is Since the surfaces of the upper part 11X and the lower member 12 are curved so as to smoothly connect each other, the thickness W1 of the upper part 11X of the upper member 11 and the lower member 12 and the thickness W2 of the portion therebetween (the lower portion 11Y) is equal to or greater than the thickness W1 of the upper portion 11X and the thickness W3 of the lower member 12. Can be maintained. Thereby, unlike the case where, for example, a flat outer shape in which the surfaces 11a and 12a of the respective portions are all located on the same plane is adopted, the thickness of the heat insulating material for foundation 10 is partially insufficient or unnecessarily large. Can be avoided, the heat insulating performance of the base insulating material 10 can be ensured without bias, and unnecessary use of the heat insulating material can be suppressed.

  By the way, regarding the disposition position of the lower member 12, if the back surface 12b of the lower member 12 is too far from the inner surface S of the foundation 1, the filling space V becomes too wide and the amount of the termite-controlling material 40 necessary to obtain the termite-controlling performance is obtained. Increase. On the other hand, if the distance between the back surface 12b of the lower member 12 and the inner surface S of the foundation 1 is too small, the filling space V becomes too narrow, and even if the filling space V is filled with the termite-controlling material 40, it is sufficient. A situation in which termite control performance cannot be obtained may also occur. As described above, since the position of the lower member 12 should be carefully determined in order to obtain termite control performance, in the above-described embodiment, the lower member 12 faces the base 1 in order to eliminate a variation in the installation position of the lower member 12. The rear surface 12b of the lower member 12 is provided with an abutting portion 15 extending from the rear surface 12b to the inner surface S of the foundation 1 and having a tip 15c abutting on the inner surface S of the foundation 1.

  By disposing the lower member 12 at a position where the tip 15c of the abutting portion 15 contacts the inner surface S of the foundation 1, the distance from the inner surface S of the foundation 1 to the back surface 12b of the lower member 12 is fixed (abutting). The length of the lower member 12 can be maintained while maintaining the length of the portion 15), so that even a novice, not an expert in construction, does not make the filling space V too wide or narrow, and places the lower member 12 at an exquisite distance. Can be arranged.

  In the above embodiment, the abutting portion 15 has a top portion 15a forming a ridge line extending in the longitudinal direction at the upper end thereof, and a pair of inclined surfaces 15b extending from the top portion 15a to both sides in the width direction. Therefore, when the termite-controlling material 40 is filled into the filling space V, the termite-controlling material 40 does not ride on the upper surface of the abutment portion 15 and passes along the inclined surface 15b of the abutment portion 15 and fills the lower filling space V. Is led to. For this reason, it is possible to reduce the use of the termite-controlling material 40 that is wasted on the upper surface of the butting portion 15.

  In the above embodiment, since the projection 20 is formed on the surface 11y of the lower portion 11Y of the upper member 11, the operation of removing the upper member 11 from the lower member 12 by using the projection 20 as a handle. Can be easily performed.

  Further, in the above embodiment, the projection 18 is provided at a position directly below the formation position of the projection 20 on the upper member 11, so when attaching the upper member 11 to the lower member 12, hold the projection 20 as a handle. By adjusting the center of the projection 20 to the center of the mounting recess 17 of the lower member 12, the projection 18 of the upper member 11 can be easily fitted into the mounting recess 17 of the lower member 12.

(6) Modification In the above embodiment, as shown in FIG. 3 and the like, of the plurality of sections defined by the outer frame portions 2A to 2D and the inner frame portions 2E to 2H of the foundation 1, the bathroom section X Although the example in which the heat insulating material 8, the base heat insulating material 10, and the corner heat insulating material 30 are attached so as to cover at least the side surface S has been described, various attachment modes of other heat insulating materials are also conceivable.

  For example, it is conceivable to insulate all the compartments including the bathroom compartment X. In this case, depending on the section, the base insulating material 10 and the corner insulating material 30 may be omitted, and the inner side surface S of the section may be covered using only the heat insulating material 8. That is, since the bathroom section X is an environment in which the humidity tends to be high and the termites are more preferable, it can be said that the significance of providing the base insulating material 10 is greater than the other sections. Conversely, in a section where there is no circumstance that the humidity tends to be high, the foundation heat insulating material 10 may be omitted. For this reason, depending on the section, the inner surface S may be covered using only the heat insulating material 8.

  Further, instead of the above-described embodiment in which the lower end portion of the inner side surface S of the bathroom section X is entirely covered with the base insulating material 10, for example, as shown in FIG. The material 10 may be attached. In other words, a place where a termite invasion path (ant trail) is likely to be formed in a certain section is, for example, a place where the drain hole 50 shown in FIG. 18 is provided. Can be. For this reason, the foundation heat insulating material 10 may be attached only to a place where the ant passage is likely to be formed.

  In the case where the base insulating material 10 is provided only at a specific location in the section as in the example of FIG. 19, it is conceivable to use a base insulating material 10 'as shown in FIG. That is, the heat insulating material for base 10 'has a pair of closing portions 19 on the back surfaces at both ends in the longitudinal direction. The closing portion 19 is provided only at both ends in the longitudinal direction of the back surface 12 b of the lower member 12, and is filled with the termite-controlling material 40 formed between the back surface 12 b and the inner surface S of the foundation 1. V (see FIGS. 6 and 10) is closed from both sides. In other words, the rear surface 12b of the lower member 12 is formed so as to be recessed on the side away from the inner side surface S of the foundation 1 only in a range excluding both ends in the longitudinal direction. According to such a configuration, even when the heat insulating material for base 10 ′ is used alone, the filling space V can be made a closed space, and the shape after filling of the termite control material 40 can be stabilized. .

  Further, in the above embodiment, the heat insulating material 8 is attached only to the inner side surface S of the rising portion 2 of the foundation 1, and the heat insulating material 8 is not attached to the upper surface of the slab 3, but for example, as shown in FIG. The heat insulating material 8 may be attached to the upper surface of the slab 3 as well as the inner side surface S of the second member 2. In this case, the heat insulation performance can be further improved. In this case, if the height of the lower member 12 of the heat insulating material for foundation 10 is set to be equal to or greater than the thickness of the heat insulating material 8 attached to the upper surface of the slab 3, the upper member 11 can be removed during maintenance. The termite control material 40 can be inspected while the heat insulating material 8 on the upper surface of the slab 3 is left.

  Furthermore, the corner heat insulating material 30 is not essential and can be omitted. That is, separately from the base insulating material 10 shown in FIGS. 4 and 5, etc., if a base insulating material in which one end in the longitudinal direction of the upper member 11 and the lower member 12 is cut obliquely at 45 degrees is prepared, By laying out the cut surfaces of the heat insulating material for the foundation, the corners of the foundation 1 can be covered with the heat insulating material without the corner heat insulating material 30. However, in this case, when removing and attaching the upper member located at the corner, it is necessary to additionally attach and detach the upper member 11 of the adjacent base insulating material 10.

  In the above-described embodiment, a case has been described in which two convex portions 18 are provided on the lower surface 11d of the upper member 11 and two corresponding mounting concave portions 17 are provided on the upper surface 12c of the lower member 12. The number of the units 18 is not limited to two, and may be three or more, or one each. Alternatively, the positions where the convex portions 18 and the mounting concave portions 17 are formed may be reversed, that is, a concave portion may be provided on the lower surface 11d of the upper member 11, and a mounting convex portion may be provided on the upper surface 12c of the lower member 12 so as to fit into the concave portion.

  In the above-described embodiment, the case where the shape of the abutting portion 15 is a pentagonal prism is described. However, the shape of the abutting portion 15 is not limited to this, and may be a rectangular parallelepiped shape. The cross section may be a rhombic prismatic shape like the portion 15 '. The modification shown in FIG. 22 is the same as the embodiment shown in FIG. 5B except that the cross-sectional shape of the abutment portion 15 'is rhombic.

  The thickness and material of the abutting portion 15 are not particularly limited as long as the strength can be secured to such a degree that the abutting portion 15 does not break or break when the tip 15c of the abutting portion 15 is brought into contact with the inner surface S of the foundation 1. Not done. From the viewpoint of securing the strength of the abutting portion 15, it is better to increase the thickness of the abutting portion 15. However, if the thickness is too large, the thickness becomes an enemy and the termite-controlling material 40 is filled from directly above the filling space V. When the termite-controlling material 40 is replaced, it becomes difficult to replenish the termite-controlling material 40 into the filling space V located immediately below the abutment 15, or when the termite-controlling material 40 is replaced. It is difficult to take out.

  In this regard, by making the shape of the abutting portion 15 into a prismatic shape having a rhombic cross section as shown in FIG. 22, it is difficult to replenish the termite-controlling material 40 directly below the abutting portion 15. However, it becomes easy to replenish the termite-controlling material 40 to the portion directly below the contacting portion 15 where the amount of the termite-controlling material 40 tends to be insufficient from both sides of the contacting portion 15, and when the termite-controlling material 40 is replaced. The termite control material 40 located at the lower part of the abutting part 15 can be easily taken out from both sides of the abutting part 15. From the viewpoint of the ease of replenishment and removal of the termite-controlling material 40 from both sides, the cross-section in which the diagonal line extending in the left-right direction of the rhombus in the cross-section is shifted upward or downward is a kite-shaped prismatic shape. Is also good.

  Further, in the above embodiment, the case where the heat insulating material for a foundation of the present invention is applied to the foundation 1 (so-called solid foundation) integrally having the slab 3 covering the upper surface of the ground and the rising portion 2 rising from the slab 3 has been exemplified. However, the present invention can be suitably applied not only to a solid foundation but also to a cloth foundation formed into, for example, an inverted T-shape in cross section.

DESCRIPTION OF SYMBOLS 1 Foundation S (Inside surface) Q Inflection point V Filling space p Step 3 Slab 8 Heat insulating material 10 Heat insulating material for foundation 11 Upper member 11X Upper part 11Y Lower part 11a Surface 11b (of upper member) ) Back surface 11d Lower surface (of upper member) 11x Surface (of upper portion) 11y (surface of lower portion) 12 Lower member 12b Back surface 12c (of lower member) Upper surface 15c (of lower member) 15 Abutment portion 15a Top portion 15b Inclined surface 15c Tip 17 Mounting recess 18 Convex portion 19 Closing portion 20 Projection 40 Termite-proof material

Claims (7)

A heat insulating material for a foundation, which is attached to a position covering a termite control material disposed at a lower end portion of an inner side surface of a foundation for supporting a building,
A lower member provided at a position separated from an inner surface of the foundation so that a filling space for filling the termite-controlling material with the foundation is formed;
An upper member that is removably provided at an upper portion of the lower member so that the filling space can be closed, and that opens an upper surface of the filling space by removing from the upper portion of the lower member ,
Wherein the upper surface and the lower surface of the upper member the lower member is basic insulation for characterized that you have inclined such as side height increases near the inner surface of the base. The heat insulating material for a foundation according to claim 1 ,
The upper member has a convex portion or a concave portion dug upward, with a part of the lower surface protruding downward,
The heat insulating material for foundations, wherein the lower member has a mounting concave portion for fitting the convex portion on an upper surface thereof or a mounting convex portion for fitting into the concave portion. The heat insulating material for a foundation according to claim 1 or 2 ,
The upper member has an upper portion and a lower portion located below the upper portion and in contact with the lower member, and the surface of the lower portion is a surface between the upper portion and the lower member. A heat insulating material for a foundation, characterized in that the heat insulating material has a curved surface that is curved so as to smoothly connect the surfaces. The heat insulating material for a foundation according to any one of claims 1 to 3 ,
A heat insulating material for a foundation, comprising: a rear surface of a lower member facing the foundation, a projection portion extending from the rear surface to an inner surface of the foundation, and a leading end contacting the inner surface of the foundation. The heat insulating material for a foundation according to claim 4 ,
The heat insulating material for foundations, wherein the abutting portion has a top portion forming a ridge line extending in a longitudinal direction at an upper end thereof, and a pair of inclined surfaces extending from the top portion while being inclined to both sides in the width direction. A heat insulating material for a foundation, which is attached to a position covering a termite control material disposed at a lower end portion of an inner side surface of a foundation for supporting a building,
A lower member provided at a position separated from an inner surface of the foundation so that a filling space for filling the termite-controlling material with the foundation is formed;
An upper member that is removably provided at an upper portion of the lower member so that the filling space can be closed, and that opens an upper surface of the filling space by removing from the upper portion of the lower member,
On the back surface of the lower member facing the foundation, a projecting portion is provided which extends from the back surface to the inner surface of the foundation, and the tip of which abuts on the inner surface of the foundation,
The heat insulating material for foundations, wherein the abutting portion has a top portion forming a ridge line extending in a longitudinal direction at an upper end thereof, and a pair of inclined surfaces extending from the top portion to both sides in the width direction. A heat insulating material for a foundation according to any one of claims 1 to 6,
Insulation material attached so as to cover the inner surface of the foundation in a portion located above the insulation material for the foundation,
A heat-insulating underfloor structure comprising: a heat insulating material for the foundation; and an ant-inhibiting material filled in the filling space between the foundation.